Snap fastener



J. WIEHN SNAP FASTENER Oct. 13,. 1925. 1,557,125

Filed March 5, 1925 Jaw 6' Wa e/mo D 0? %WM 53 m moon winrm, 0F

' FASTENER cc DORCHESTER, MASSACHUSETTS, 'ASSIGNOR TO UNITED STATESMIPANY, A CORPORATION OF MAINE. I v

SNAP FASTENER.

Application filed March 3, 1925. Serial No. 12,918. i

To all whom it may corwe'rh:

Be it known that acid of the United Dorchester,

I, JACOB WIEHN, a'cit-i- States, and resident of in the county ofSuffolk and State of Massachusetts, have invented an Improvement in SnapFasteners, of which the following descriptlon, in connection with theaccompanying drawin is a specification, like reference characters on thedrawin g designating like parts.

This invention relates to the socket member of a stud in which the issecured to apart and socket fastener of the kind stud, having anenlarged head,

to which a carpet or something of that nature is to be detachablyfastened ber secured thereto member.

by engagement/of the socket memwith the said stud While not limited tothat use the fastener herein shown is adapted and desirable for use inconnection wit detachably held stud member of th h carpets or rugs to bein place on the floor by the fastener which is secured to the floor, andthe socket member which is secured to t The socket member he carpet orfabric. forming the sub'ectof this invention is extremely simple aninexpensive, but 18 of exceptional eii'ectlveness and durability.

Fig. l is a side elevation of a socket member or'fastener embodying thisinvention, as

it appears before attachment to the fabric with which the fastener isused.

Fig. 2 a plan View as seen looking toward the socketentra'nce for thestud.

Fig. 3. a sectional view member secured to the from the stud memb fabricand separated er and,-

Fig. 4 is a side elevation of the stud memher are to be detachablyReferring to Fig.

secured to the floor or part to which the fabric and socket member shownin Fig. 3 fastened.

4, the stud member may be of any usual construction, being adapted to besecured to the port or material in fastener is to be used, and

floor, 2, or other supconnection with which said stud having a head, orslight enlargement, 3, at its outer end, or,

to refer to the same feature in different language, having a slightlycontracted neck, 4, between its base or supporting part, 5, and thehead, 8, which is to enter the socket.

The socket member unitary ring or annu is composed of a single lus ofmetal, 10, which of the slits, if said slits .no in connection with oneend curved inward and upward as best shown at 12 in Fig. 3,and'havingthe said inwardly and upwardly curved portion divided byradial slits, 15, into a number of separate wings or fingers which arethus free to yield slightly for the resilient expansion and contractionof the mouth of the socket, which is within the At the other edge .ofthe ring or short tube there are provided a number of prongs, 20, whichnormally lie, in a cylindrical snrface, or extend in a general directionparallel to the axis of the socket member. Said prongs are sharppointed, but broaden toward the base or junction with the continuousportion of the ring or tube.

Spaces,fl2 2, are left between the prongs,.

20, which spaces are as shown about equal in length to the width of thebases of the projections, and the slits, 15, which dividethe-roundedinternal lip, 12, around the mouth of the socket into k wingsor fingers are located in line with the metal of the fastening prongs,20, so that they do not substantially weaken the ring or annulus, as theprongs would prevent the ring from being tornapart in line with one 15,as might more easily occur were located opposite the spaces. 22, betweenthe prongs and thus more nearly severed the ring.

vl n applying the socket to the fabric the. prongs are forced up throughthe fabric and are then turned showing the socket or curled, preferablyoutward, as shown in Fig. 3, thus clinching the socket to the fabric andpreventing the latter from pulling away in the operation of detachingthe socket from the stud in the customary use of the fastener.

The spaces,

a suitable bearing for the socket piece against the lower face of thefabric and,

insure that the socket member is properly forced down over the studmember when pressure is applied to the fabric above it.

Sockets of the kind herein described are commonly used with carpets orpiled fabwhich the pron 's, 20, penetrate the woven fabric and for themost part crowd the threads apart without cutting or breaking them, andwhen said prongs are bent down said fingers.

separate spring portion of 1316' from the socket 22, between thesprongsafford v or clinched upon the woven portion of the fabric they arepractically embedded in and concealed by the. pile of the fabric so thatthe fastener is practically invisiblewhen the carpet is fastened inplace thereby.

The inwardly and-upwardly curved portion, 12, "preferably terminates inan outwardly turned margin approximately in the plane of the spaces, 22,between the'prongs, thus affording a complete annular bearing againstthe lower surface of the fabric, adclitional to that afforded by theedges of the ring in said spaces, 22,-'and the inwardly curved portionaffords a transversely convex annular lip entirely around the-resilifent mouth, which thus slips smoothly on to and off from the stud headwhen proper force is applied, although it holds securely when the lipsprings back around the neck, 4; of the stud after it has been expandedin being forced overthe head, 3, ofthe'stud.

I claim- 1. A socket member fora snap -fastener I composed offa shorttube having one end curved inward to form a transversely convex internallip, said lip having radial slits" forming separate spring wings, theother end of the said tube being provided with a number ofattachingiprongs parallel to the' axis of the tube and havingsubstantial spaces between them at their junction with the unprongedportion of the tube, the rai in the plane Withthe' bottoms of the spacesbetween the attaching prongs.

JACOB WIEHN.

